Abstract: The present disclosure relates to an air-to-air through-wall bushing including a conductor, insulation surrounding the conductor, a ventilation inlet at a first end of the bushing, and a ventilation outlet at a second end of the bushing. The bushing is arranged through a wall and a pressure difference between a first pressure on a first side of the wall and a second pressure on a second side of the wall is provided The inlet and outlet allow cooling air to pass through a ventilation channel within the bushing driven by the provided pressure difference.

Abstract: A device for efficient object detection and selective display of video frames is disclosed. A plurality of bounding boxes to visually bound one or more subjects are defined in the received video frames; each bounding box includes padding above and laterally with respect to the one or more subjects in the video frame. The device may reduce the plurality of bounding boxes by merging bounding boxes to create reduced plurality of merged bounding boxes. The device performs object detection on the reduced plurality of merged bounding boxes by searching a training database for detecting and identifying suspicious objects. The identified objects are annotated. On identifying that an object is suspicious, based on a trained database of firearms in a plurality of environments across a plurality of industries, the video frame is transmitted to a graphical user interface of a user device.

Abstract: A device may receive and store video frames in the memory. The device may define, in a video frame among the video frames, a plurality of bounding boxes to visually bound one or more subjects, each bounding box of the plurality of bounding boxes may be defined in accordance with a pre-defined aspect ratio, and each bounding box may comprise padding above and laterally with respect to the one or more subjects in the video frame. The device may reduce the plurality of bounding boxes by merging two bounding boxes among the plurality of bounding boxes to create a merged bounding box, wherein the merged bounding box may maintain the pre-defined aspect ratio and visually bounds the two bounding boxes being merged, and wherein the reduced plurality of bounding boxes is provided to an object detector.

Abstract: A device for efficient object detection and selective display of video frames is disclosed. A plurality of bounding boxes to visually bound one or more subjects are defined in the received video frames; each bounding box includes padding above and laterally with respect to the one or more subjects in the video frame. The device may reduce the plurality of bounding boxes by merging bounding boxes to create reduced plurality of merged bounding boxes. The device performs object detection on the reduced plurality of merged bounding boxes by searching a training database for detecting and identifying suspicious objects. The identified objects are annotated. On identifying that an object is suspicious, based on a trained database of firearms in a plurality of environments across a plurality of industries, the video frame is transmitted to a graphical user interface of a user device.

Abstract: A composition for forming a hydrogen peroxide based emulsion explosive which composition comprises: an oxidizer-phase comprising at least 35% by weight of hydrogen peroxide and at least 25% by weight of water, a fuel-phase comprising at least one primary oil type fuel with a flash point below 100° C. and at least one secondary oil type fuel with a flash point over 150° C. and at least one emulsifier, wherein the oxidizer-phase is discontinuously dispersed throughout the continuous fuel-phase. A method of preparing an emulsion type explosive composition is also disclosed.

Abstract: A sensitizing composition for generating gas bubbles in an energetic hydrogen peroxide emulsion is disclosed. The sensitizing composition comprises a liquid carrier, a solid hydrogen peroxide catalyst which is dispersed in the liquid carrier and; a coating agent which is non-soluble in hydrogen peroxide and in water and which is arranged to coat the solid hydrogen peroxide catalyst dispersed in the liquid carrier. A method of preparing such a sensitizing composition is also disclosed.

Abstract: A composition for forming a hydrogen peroxide-based emulsion explosive which composition comprises; an oxidizer-phase comprising at least 15% by weight of hydrogen peroxide and at least 15% by weight of water, a fuel-phase comprising at least one oil type fuel, a liquid emulsifier and at least one finely divided colloidal non-sensitizing solid adsorbent, wherein the oxidizer-phase is discontinuously dispersed throughout the continuous fuel-phase. A method of preparing an emulsion type explosive composition is also disclosed.

Abstract: An apparatus for inducing seat belt usage by the driver of a vehicle, said apparatus comprising: a seat belt, said seat belt carrying a seat belt buckle, a latching clasp for releasable engagement of said buckle and a presence detector for acknowledging when said buckle is engaged in said latching clasp.